Dissolving-stereopticon.



A. F. VICTOR. vDISSOLVING STEREOPTICON.

APPLICATION FILED MAY3,1917. gm gm Patented July 3, 1917.

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A. F. VICTOR.

DISSOLVING STEREOPTICON.

APPLICATION men MAY 3. I917.

1,21 ,QMD Patented Jul 3, 1917.

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v v w w w Wessex A. F. VICTOR. DISSOLVING STEREOPTICON.

APPLIICATION FILED MAY 3; I91], I LQLQM Patented. July 3, 191?.

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names srarns PAENT OFFIQE.

ALEXANDER FERDINAND VICTOR, OF DAVENPORT, IOWA.

DISSOLVING-STEBEOPTICON.

mea re.

Application filed May 3, 1917.

To all whom it may concern:

Be it known that I, ALEXANDER FERDI NAND VICTOR, a subject of the King of Sweden, having declared his intentions of becoming a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented new and useful Improvements in Dissolving-Stereopticons, of which the following is a full, clear, and exact description.

My invention relates to picture projecting lanterns or stereopticons, and particularly to twin stereopticons.

The object of my invention is to provide a single support for two stereopticons whose axes are in the same horizontal plane and which are used to obtain the dissolving effect of pictures alternately projected thereby upon the same superposed area of the screen; and to provide for the necessary adjustment of the same either simultaneously or independently of each other to focus the same and obtain a well defined picture easily and quickly. This I accomplish by the means hereinafter fully described, and as particularly pointed out in the claims.

In the drawings:

Figure 1 is a plan view of my invention.

Fig. 2 is a vertical transverse section taken on dotted line 2--2, Fig. 3.

Fig. 3 is a vertical longitudinal section taken on dotted line 83, Fig. 2.

Fig. 1 is a horizontal section taken on dotted line 4-4, Fig. 2.

Referring to the drawings, 5 represents a circular base from the central raised plateau of which a vertical lug 6 arises which has the flattened sides of the lower extensions of the uprights 8 of the corresponding brackets 9 secured to its flattened sides by means of a suitable screw 10. This screw extends through an enlarged opening in one of said extensions and in said lug and is tapped into the other extension, and it has a boss about midway its length so-that when it is tightened the said extensions will be clamped against thelug. V

Brackets 9 each consists, in addition to the uprights, of a transverse arm 12 projecting therefrom. The upper surfaces of these Specification of Letters Patent.

Patented July 3, 191?.

Serial No. 166,105.

arms are horizontal; the outer ends thereof are slightly upturned and approximately midway between said ends, and the uprights of'said arms are provided with depending bosses 13 up through the bores of which the smooth portions of the barrels of screws 14: pass that have their upper screw-threaded ends tapped into the lower edge or sole of the base portions of the annular-frame 16. The outer ends of the soles of the base portion of the annular frames rest upon the up turned ends of arms 12, which latter near said ends have slots 19 therein extending in the same direction as the axes of the stereopticons. Setscrews 20 are inserted up through slots 19 and are tapped into the sole of the said annular frame.

The housing 18 of the stereopticons within which the condensing-lenses (not shown and the lamps (not shown) are inclosed are more or less cylindrical, and the portions 17 thereof are secured within annular frames 16, and when it is desired to adjust either of said stereopticons independently of the other screw 20 is loosened and the stereopticon turned on screw 14: as a pivot within the limits of slot 19 until the desired position is obtained and then screw 20 is tightened to retain said stereopticon in its adjusted position.

Uprights 8 of brackets 9 extend up above the horizontal plane of arms 12 a suitable distance and are semi-circular in cross-sec- 7 tion, and when they are clamped together by screw 10, as shown in Fig. 4, they constitute a tubular standard for the stereopticons the bore of which is square in cross-section. Uprights 8 are provided next their upper ends with transverse lugs 21, the lug projecting from one upright extending to the right and the lug diametrically opposite thereto projecting to the left. The upper ends of said uprights are connected by a suitable set-screw 22, the smooth barrel of which is passed from front to rear loosely through the forward lug 21 of one upright and is provided with collars 23, 23 on each side of the same and is tapped into the rear lug 21 of the other upright.

By properly manipulating screw 22 one upright may be moved on the axis of screw 10 in one direction and the other upright in the opposite direction in order to bring the focal axes of the stereopticons in the same horizontal plane, and by manipulating screw 20 the focal axes of said stereopticons can be adjusted so that they will intersect the same vertical plane. These horizontal and vertical adjustments are comparatively slight and yet are necessary in order to enable each stereopticon to project the image or picture over the same superficial area on the screen. When it is desired to move said superficial area or field of projection up or down, screw 10 is slightly loosened and the stereopticon simultaneously moved to obtain the desired result, and when it is desired to move the said field of projection laterally, the entire apparatus is moved on base 5 to the desired o'sition. I

What 1 claim as new is: 1. A picture projecting apparatus comprising two projecting lanterns arranged in the same horizontal plane, in combination with a single base, a standard secured to and arising from said base, transverse arins projecting from said standard upon which said lanterns are mounted, and means for adjusting said lanterns vertically and transversely.

2. A picture projecting apparatus coinprising two projecting lanterns arranged in the same horizontal plane, in combination with a single base, a vertically split standard the lower ends of the divisions of which are pivotally secured to and arise from said base, transverse arms projecting from the divisions of said standard upon which said lanterns are mounted, and means for adjusting said lanterns vertically and horizontally.

3. A picture projecting apparatus comprising two projecting lanterns arranged in the same horizontal plane, in combination with a single base, a standard arising from and secured to the same, transverse arms projecting in opposite directions from said standard, annular frames in which said stereo'pti'c'ons are mounted, a pivot extending up from said arm that engages one end of the sole of said annular frame, and means for limiting and retaining said annular frame in its adjusted position.

fl. A picture projecting apparatus comprising two projecting lanterns arrangedin the same horizontal plane, in combination with a single base, a standard arising from and secured to the same, transverse arms projecting in opposite directions from said standard, annular frames in which said stereopticons are mounted, a pivot extending up from said arm that engages one end of the sole of said annular frame, amt means including a slotted opening in said arms near their outer ends, and a set-screw en gaging said opening and tapped into said annular frames for limiting and retaining said annular frame in its adjusted position.

5. A picture projecting apparatus com prising two projecting lanterns arranged in the same horizontal plane, in combination with a single base, a split standard the lower extensions of the divisions of which are pivotally secured to the same, transverse arms projecting in opposite directions from said divisions in which said stereopticons are mounted, a pivot extending up fro said arni that engages one end of the sole of said annular frame, and means for limiting and retaining said 'anniilarfraine in its adjusted positi'o 6-. A picture projecting apparatus. comprising two prhjecting lanterns arranged in the same hnri-Zohtal plane in combination with a single base having a pivoted lug projecting up therefrom, a vertically split standard, a suitable, pivotal belt for pivotally connecting the lower ends of the divisions to said basal lug, and transverse lugs projecting in opposite directions from said -(,livi'sinn's and upon which said lanterns are mounted and, pivoted.

7. A prcture pro ecting apparatus comprising two projecting lanterns arranged in the same horizontal plane, n combination with asi'ngle base having a pivoted lugjprojecti'ng up therefrom a vertically split standard, a suitable pivotal .bolt for pivotally connecting the lower ends of the divisions to said basal lug, means for adjusting one 'of said divisions on said bolt as a pivot independently of the other division, and transverse lugs'projecting opposite "directions from said divisions and upon which said lanterns are mounted and pivoted;

8. picture projecting apparatus comprising two projecting lanterns arranged in the same horizontal plane, in "combination with a single base having pivotal lug projecting up therefrom, two brackets each consisting of an upright member, and an arm projecting transversely therefrom, a transverse bolt pivotally connecting the lower ends of said uprights to said lug, and a horizontally disposed screw the axis of which is at right angles to that of said bolt for adjustably connecting the upper ends of said uprights. p

9., A pi ture projecting apparatus comprising two project ng lanterns arranged in justably connecting the upper ends of said In Witness whereof I have hereunto set uprighlts, annular Jfiraines mountfed (an said my hand this 23rd day of April, 1917.

arms t at su ortt e ousin s o sai stereopticons, ver tlhal pivotal screws connecting ALEXANDER FERDINAND VICTOR the soles of said annular frames to said arms, Witnesses:

and adjusting screws extended up through FRANK D. THOMASON, slotted openings in said arms. LILLIAN E. OBRIEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

